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Photo: Alastair Pike/AFP via Getty

Hackers who infiltrated government networks in the SolarWinds cyberattack compromised "dozens of email accounts" in the Treasury, Senate Finance Committee Ranking Member Ron Wyden (D-Ore.) said Monday.

Why it matters: The monthslong cyberattack impacted a range of companies and government agencies and has prompted outrage in Washington D.C. as officials try to get to the bottom of what happened. The Treasury has not yet been able to ascertain what information, if any, was stolen, per Wyden.

The big picture: The breach that began in July "appears to be significant," Wyden said in an emailed statement. Perpetrators broke into systems in the Departmental Offices division of Treasury, which comprises the department’s highest-ranking officials, according to Wyden.

  • There is no evidence the hack impacted the IRS or taxpayer data, but the “full depth” of the attack is not known.
  • "Finally, after years of government officials advocating for encryption backdoors, and ignoring warnings from cybersecurity experts who said that that encryption keys become irresistible targets for hackers, the USG has now suffered a breach that seems to involve skilled hackers stealing encryption keys from USG servers," Wyden said.

Of note: Treasury Secretary Steven Mnuchin told CNBC, "The good news is there's been no damage, nor have we seen any large amounts of information displaced."

  • The Treasury is working with the National Security Council and Intel agencies to address the breach, Mnuchin said.
  • The Treasury did not immediately respond to Axios' request for comment.

Go deeper

Russia’s SolarWinds hackers likely burrowed deep

Illustration: Eniola Odetunde/Axios

Russian cyber operators are almost certainly still rummaging through U.S. networks, potentially lifting data or setting traps for future havoc even as officials scramble to assess the damage Moscow's hack has already dealt.

Why it matters: The hack, powered by malicious code inserted into an update of SolarWinds network management software, could be among the most significant in the country’s history, perhaps on par with China’s hack of the Office of Personnel Management or Russia’s 2014 hack of the State Department.

Perfect storm brewing for extreme politicians

Data: Axios research; Table: Jacque Schrag/Axios

Redistricting and a flood of departing incumbents are paving the way for more extreme candidates in this year's midterm elections.

Driving the news: At least 19 House districts in 12 states are primed to attract such candidates — hard partisans running in strongly partisan districts — according to an Axios analysis of districts as measured by the Cook Political Report's Partisan Voter Index (PVI).

Updated 3 hours ago - Technology

3D printing's next act: big metal objects

Chief Scientist Andy Bayramian makes modifications to the laser system on Seurat's 3D metal printer. Photo courtesy of Seurat Technologies.

A new metal 3D printing technology could revolutionize the way large industrial products like planes and cars are made, reducing the cost and carbon footprint of mass manufacturing.

Why it matters: 3D printing — also called additive manufacturing — has been used since the 1980s to make small plastic parts and prototypes. Metal printing is newer, and the challenge has been figuring out how to make things like large car parts faster and cheaper than traditional methods.